双肩背包在哪?是不是在桌下? 不.不在那.他在桌子上. 用英语怎么写?

Where's the backpack?
Is it under the desk?
No,it isn't. It's on the desk.

Where is the bag?
Is it under the desk?
No,it isn't.
It is on the desk.

Where is the backpack?
Is it under the table?
No, it isn't .
It is on the table.

Where is the backpack?
Is it under the table?
No,it isn't.
It's on the table

Where is the backpack?Is it under the desk?
No,it isn't.It is on the desk.
注意是 双肩背包backpack，不是背包bag!
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